This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: b. {(–1, 5), (0, 3), (2, 3), (3, –1)} A fourth way to represent a relation is with a two dimensional curve or line. Graphing a relation gives us an easy way to tell if it is a function. We will use the verticalline test to determine if each of the following graphs represents a function. Example 3 In algebra, we frequently use function notation to describe function rules. Example 4: 5 ) ( + = x x f Input Function Output Ordered Pair 18 Add 5 23 (18, 23) A Subtract 1 A – 1 (A, A1) X f f(x) ( x , f(x) ) Writing and using a function rule: The area of a square tile is a function of the length of a side of the square. Write a function rule for the area of a square. Evaluate the function for a square tile with side length 3.5 inches. Homework# ___ : Page 59 (57, 1221, 2331odd & 39)...
View
Full Document
 Fall '09
 Johnson
 Algebra, relation

Click to edit the document details